Johnson William D, Bouchard Claude, Newton Robert L, Ryan Donna H, Katzmarzyk Peter T
Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, USA.
Obesity (Silver Spring). 2009 Mar;17(3):571-7. doi: 10.1038/oby.2008.582. Epub 2008 Dec 18.
As use of self-reported data to classify obesity continues, ethnic differences in reporting errors remain unclear. The objective of this study is to elucidate misreporting disparities between African Americans (AAs) and European Americans (EAs). The Pennington Center Longitudinal Study (PCLS) is an ongoing investigation of environmental, behavioral, and biological factors associated with obesity, diabetes, and other common diseases. Self-reported and measured height and weight were collected during initial screening for eligibility in various studies by telephone and clinic visits. All ethnicity-sex groups (15,656 adults aged 18-65 years, 53% obese, 34% AA, 37% men) misreported heights and weights increasingly as measured values increased (P < 0.0001). More AA vs. EA women (P < 0.001) misreported height and weight, but more EA vs. AA men misreported their weight (P < 0.02). Obesity was underestimated more in AA vs. EA women (self-reported - measured prevalence = -4.0% (AA) vs. -2.6% (EA), P < 0.0001), but less in AA vs. EA men (-3.2% (AA) vs. -4.2% (EA), P < 0.0001)). With measured obesity prevalence equalized at 53% in all groups, the self-reported obesity prevalence in women was 50.4% (AA) vs. 49.6% (EA), and in men 49.8% (AA) vs. 47.3 (EA). Underestimation in women was -2.6% (AA) vs. -3.4% (EA); in men it was -3.2% (AA) vs. -5.7% (EA), P < 0.003. Self-reported height and weight portend underestimation of obesity prevalence and the effect varies by ethnicity and gender. However, comparisons depend on the true prevalence within ethnicity-gender groups. After controlling for obesity prevalence, disparity in underestimation was greater in EA than in AA men (P < 0.003) but not women.
随着使用自我报告数据来分类肥胖的情况持续存在，报告误差中的种族差异仍不明确。本研究的目的是阐明非裔美国人（AA）和欧裔美国人（EA）之间的误报差异。彭宁顿中心纵向研究（PCLS）是一项正在进行的关于与肥胖、糖尿病和其他常见疾病相关的环境、行为和生物学因素的调查。在通过电话和门诊进行的各项研究的初始资格筛查期间，收集了自我报告的身高和体重以及测量的身高和体重。所有种族 - 性别组（15656名18 - 65岁的成年人，53%肥胖，34%为非裔美国人，37%为男性）随着测量值的增加，身高和体重的误报情况越来越严重（P < 0.0001）。与欧裔美国女性相比，更多的非裔美国女性（P < 0.001）误报了身高和体重，但与非裔美国男性相比，更多的欧裔美国男性误报了体重（P < 0.02）。与欧裔美国女性相比，非裔美国女性对肥胖的低估更多（自我报告 - 测量患病率 = -4.0%（非裔美国人）对 -2.6%（欧裔美国人），P < 0.0001），但与欧裔美国男性相比，非裔美国男性的低估较少（-3.2%（非裔美国人）对 -4.2%（欧裔美国人），P < 0.0001）。在所有组中测量的肥胖患病率均为53%的情况下，女性的自我报告肥胖患病率为50.4%（非裔美国人）对49.6%（欧裔美国人），男性为49.8%（非裔美国人）对47.3%（欧裔美国人）。女性的低估率为 -2.6%（非裔美国人）对 -3.4%（欧裔美国人）；男性为 -3.2%（非裔美国人）对 -5.7%（欧裔美国人），P < 0.003。自我报告的身高和体重预示着肥胖患病率被低估，且这种影响因种族和性别而异。然而，比较结果取决于种族 - 性别组内的真实患病率。在控制肥胖患病率后，欧裔美国男性的低估差异比非裔美国男性更大（P < 0.003），但女性并非如此。
